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Finding the Fourth Proportional to 14,963.85, 20,658.71 and 9,934.86

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Solution

The fourth proportional to 14,963.85, 20,658.71 and 9,934.86 is: 13,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,963.85 : 20,658.71 = 9,934.86 : x
  2. Step 2: Convert to fraction form
    14,963.85/20,658.71 = 9,934.86/x
  3. Step 3: Cross multiply
    14,963.85x = 20,658.71 × 9,934.86
  4. Step 4: Simplify right side
    14,963.85x = 205,241,341.96
  5. Step 5: Solve for x
    x = 205,241,341.96/14,963.85
  6. Step 6: Final answer
    x = 13,715.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.